Patents by Inventor William Kellar

William Kellar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • POSITIONING SYSTEM AND METHOD
    Publication number: 20110050488
    Abstract: A positioning method whereby inertial positioning data is calculated based upon measurements of an Inertial Navigation System. Virtual satellite ranging data is then generated based upon the inertial positioning data. The virtual satellite ranging data is then combined with received satellite ranging data from one or more satellites forming part of a Global Navigation Satellite System (GNSS). A GNSS positioning solution is then calculated based upon the combined received satellite ranging data and the virtual satellite ranging data.
    Type: Application
    Filed: September 26, 2008
    Publication date: March 3, 2011
    Applicant: LEICA GEOSYSTEMS AG
    Inventors: Anthony Cole, William Kellar
  • Polyclean dialysis station
    Patent number: D484599
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: December 30, 2003
    Inventor: William Kellar